Subaqueous motor-driven siren with internal rotor.



F. SCHENKELBERGER.

SUBAQUEOUS MOTOR DRIVEN SIREN WITH INTERNAL ROTOR.

APPLICATION FILED MAR.3I,19H.

1 ,209,503. Iatvnted DW. 15), 19143.

)Yy'fn was. fn Van Z04.

I MIMI WW4-- FERDINAND BCHENKELBERGER, OF KIEL, GERMANY.

SUBAQUEOUS MOTOR-DRIVEN smnn' WITH INTERNAL no'rdn.

Specification of Letters Patent.

Ptttented Dec; 19,1910.

Application filed March :11, mm. serial No. Wm

1"0 all whom it may concern: l

Be it known that I, FERDINAND Scrumnnusnnonn, engineer, a subject the German En'iperor, and residing at Kiel, in Ger many, have invented certain new and useful lznprm'ements in Subnqueous Motor Drive-n fill-ens with Internal. Rotors, of which the following is a specification.

Motor driven subwqueous sirens have been moposed with a rotor arranged at the out 2dr of the stator and the valve for giving signals placed inside the stator in'order that the siren may be easily protruded through the hull of the ship and so that the control 1,; devicefor moving the valve may be anranged inside the casing which surrounds the driving shaft. This constitutes a departure from. the ordinary construction in which the rotor is arranged internally'and the valve externally. Circumstances may arise which fol-bid a departure fromthe 0rrlinary design but which render it desirable that the object aimed at by 1e new type shall also be striven for. V ,,dvantage bf the new type is that it grqdtly him'plifies the construction and manipulation which consists principally of a cylinder that is turned by means of a hollow shaft which is arranged concentrically around the shaft of the rotor. v

The difficulty that has to be. overcome when the valve is afl'anged externally, and when in spite of this afian gement the Siren is to he protrudable, resides in passing the controllin through 1: necessitate openings in the hydraulic pressure chamber and in these openings the su porting arms extendingto the valve would have to he movable. 'In the various positions of the valve fihese openingswould, of course, only be par ly filled by the supportin, arms that pass through them and the unfilled parts would have to be tightly 4 closed by some special means. Reliable means that will meet these requirements-can hardly be devised.

This invention constitutes an improvement in this connection by a valve being provided which is guided at its lovvelflend containing the sound openings, in the stator.

The stator is formed so that no part o fl'the' valve needs, to be passed throu h the casing of the siren. In this way the ifliculties described above. regarding openings in the Sircn casing that would have to be tightly of the valve means for moving the valve e casing ofthe siren This would hast-h t sp bent one In quirements as the type with on external 'rotor. V 7

n the d a ingi ll lfifi lend. examples in which the nvention 1 ep e ent a sir n, ,ftM d tw and -1 'siren e! th skt ne i The rotor B rotated in the heft W n" and-moves n the sta 1 'S and tval V is arrangednegit t order. Clix the-stator ve ar arrangedthe soup .7 re-l p t ly hI h eqen rete w h the' snmd.

op n s f the -1'1?QI.".UJ si 2 -'"a' .1n ane that thesouod which is prod eed t lie oppositeeto tbefitelm 9 m ing he, valve i t V new wp mtingtberya sn ndvnce l? ena rotated rotor as 998'; a S

interrupted and cont mwfl We ill. by d that? f ane on s genes he s .LG tame vs 1 a with theeirtualvaglveefii rule, we the invention, the vulweyi sogulded in stator Wl'll l1, re l purpose. kennels, a a fixtsmalastet rh v which bo h-ions see-"venturibe i l -the v Via s ween l fittedasogasfto ro er}; f sure-conviction, s on-tqf h Openu ,a a through teas Wutenis v presu're into bh l f mislt the c e 0 91st 2;; x s ems. one must necessarily be made (it bleflfilikufig;

the-rotor R"; stator and valve are formed in the shape of disks placed parallel to each other. But also in this case the stator is formed of an internal stator and an external stator S and 8' respectively and between these two parts the valve V is guided in essentially the same manner as in the case of Figx' 1. The sound openings R, S and V are disposed in the disk-shaped )arts of the rotor stator and valve aroun the shaft LW. and cotiperate in the same manner as in the case of Fig. 1.

In the des" n shown in Fig. 2 the internal stator ispre erably made in the shape of a ternal stator and having sound openings at one end corresponding to and cooperating with. like openings of the double stator and of the rotor,-the'rotor being surrounded by pthe said=douhle stator and the valve, and the valve being contained in the inside of the .said easing and having rotating means with 1 in said casing enabling the valve to be rotated a distant place.

2. Subaqueous motor-driven siren com prising a casing, a rotor arranged within said casing, a stator, a valve for giving signals which is formed at one end in the shape of a cylinder perforated by sound openin s corresponding to and cooperating with li (e openings of the stator and of the rotor, the rotor being surrounded by the stator and the valve, an annular groove in the said stator which is closed at the bottom and into which the cylinder shaped end of the valve is movubly fitted, the entire valve be ing contained in the inside of the said rasing and having a hollow rotating shaft sue rounding the shaft of the rotor.

3. Subaqueous motor-driven sirvn romprising a casing, a rotor arranged within said casing, a stator, a valve for giving signals which is formed at one end in the shape of a cylinder perforated by sound openings corresponding to and cooperating with like openings of the stator and of the rotor. tlurotor being surrounded by the stator and the valve, the stator being formed in the shape of an internal and an externai ring joined at their bottom ends so as to form an annular spare into which the cylinder shaped end of the valve is movably fitted, the entire valve being contained in the inside of the said casing and havinga hollow rotating Shaft surroundil'ig the shaft of the rotor, and the said external ring of the stator joining directly on to the casing.

In testimony whereof I aflix my signature 

